JPS57166785A - Signal recorder and reproducer - Google Patents
Signal recorder and reproducerInfo
- Publication number
- JPS57166785A JPS57166785A JP5108781A JP5108781A JPS57166785A JP S57166785 A JPS57166785 A JP S57166785A JP 5108781 A JP5108781 A JP 5108781A JP 5108781 A JP5108781 A JP 5108781A JP S57166785 A JPS57166785 A JP S57166785A
- Authority
- JP
- Japan
- Prior art keywords
- coding
- intraframe
- code
- frame
- recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
- H04N5/9261—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction
- H04N5/9262—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction using predictive coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
PURPOSE:To reproduce a video signal of good quality with a small amount of tape consumption, by reducing the degree of dependance on the information between frames by comparing the coding system at the recording start moment and that at other time point. CONSTITUTION:An analog input signal 1 receives an A/D conversion 2 and a coding 3 to be recorded 4 on a recording medium 5. The signal 1 is then reproduced 8 through a recording medium 7 and decoded 9 to receive a D/A conversion 10. These operations are controlled by a controller 12, and an intraframe coder 21 is selected for the first frame at the starting moment of the recording. Then an interframe coder 20 is selected at and after the following frame. Thus the degree of dependance on the information between frames is reduced. In the reproduction mode, a code is added to a part of the recorded code to discriminate the intraframe coding or the inter-frame coding. This added code is reproduced. And based on the result of this reproduction, an intraframe decoder 31 or an interframe decoder 30 is selected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5108781A JPS57166785A (en) | 1981-04-07 | 1981-04-07 | Signal recorder and reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5108781A JPS57166785A (en) | 1981-04-07 | 1981-04-07 | Signal recorder and reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57166785A true JPS57166785A (en) | 1982-10-14 |
Family
ID=12877029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5108781A Pending JPS57166785A (en) | 1981-04-07 | 1981-04-07 | Signal recorder and reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57166785A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61105985A (en) * | 1984-10-30 | 1986-05-24 | Matsushita Electric Ind Co Ltd | Recording reproducing device |
JPS62500417A (en) * | 1984-10-10 | 1987-02-19 | テレフンケン フエルンゼ− ウント ルントフンク ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | How to record and play back digital video signals |
JPS6282886A (en) * | 1985-10-08 | 1987-04-16 | Matsushita Electric Ind Co Ltd | Continuous still image recording device |
JPS63310293A (en) * | 1987-06-12 | 1988-12-19 | Nec Corp | Reproducing system for compressedly recorded picture |
WO1989003159A2 (en) * | 1987-10-05 | 1989-04-06 | Intel Corporation | Digital video compression system |
JPH01278183A (en) * | 1988-04-28 | 1989-11-08 | Canon Inc | Digital image recording and/or reproducing device |
FR2638928A1 (en) * | 1988-11-08 | 1990-05-11 | Labo Electronique Physique | Devices for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system |
FR2644027A1 (en) * | 1989-03-03 | 1990-09-07 | Labo Electronique Physique | Device for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system |
JPH036187A (en) * | 1989-06-01 | 1991-01-11 | Mitsubishi Electric Corp | Inter-frame encoding device |
EP0524792A2 (en) * | 1991-07-24 | 1993-01-27 | Sony Corporation | Decoding apparatus for a compressed digital video signal |
JPH08204967A (en) * | 1995-01-20 | 1996-08-09 | Nec Corp | Data coding device |
-
1981
- 1981-04-07 JP JP5108781A patent/JPS57166785A/en active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62500417A (en) * | 1984-10-10 | 1987-02-19 | テレフンケン フエルンゼ− ウント ルントフンク ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | How to record and play back digital video signals |
JPH0344714B2 (en) * | 1984-10-30 | 1991-07-08 | Matsushita Denki Sangyo Kk | |
JPS61105985A (en) * | 1984-10-30 | 1986-05-24 | Matsushita Electric Ind Co Ltd | Recording reproducing device |
JPS6282886A (en) * | 1985-10-08 | 1987-04-16 | Matsushita Electric Ind Co Ltd | Continuous still image recording device |
JPS63310293A (en) * | 1987-06-12 | 1988-12-19 | Nec Corp | Reproducing system for compressedly recorded picture |
JPH0628446B2 (en) * | 1987-06-12 | 1994-04-13 | 日本電気株式会社 | Compressed recorded image playback method |
WO1989003159A2 (en) * | 1987-10-05 | 1989-04-06 | Intel Corporation | Digital video compression system |
JPH01278183A (en) * | 1988-04-28 | 1989-11-08 | Canon Inc | Digital image recording and/or reproducing device |
FR2638928A1 (en) * | 1988-11-08 | 1990-05-11 | Labo Electronique Physique | Devices for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system |
FR2644027A1 (en) * | 1989-03-03 | 1990-09-07 | Labo Electronique Physique | Device for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system |
JPH036187A (en) * | 1989-06-01 | 1991-01-11 | Mitsubishi Electric Corp | Inter-frame encoding device |
EP0524792A2 (en) * | 1991-07-24 | 1993-01-27 | Sony Corporation | Decoding apparatus for a compressed digital video signal |
EP0524792A3 (en) * | 1991-07-24 | 1994-01-05 | Sony Corp | |
JPH08204967A (en) * | 1995-01-20 | 1996-08-09 | Nec Corp | Data coding device |
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